Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study
The aim of this work is to assess the crystalline structure modification of an SLM Co-Cr-W dental alloy, veneered with two different ceramics, by means of X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy, coupled with energy-dispersive spectroscopy (SEM-EDS)....
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MDPI AG
2023-07-01
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| Online Access: | https://www.mdpi.com/2076-3417/13/14/8052 |
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| author | Caius Stoian Lavinia Cosmina Ardelean Meda Lavinia Negrutiu Marinela Miclau Cristian Casut Cosmin Sinescu Anastasia Alexandratou Athanasios Katsavrias Alexandra Denisa Stoian Mihai Rominu |
| author_facet | Caius Stoian Lavinia Cosmina Ardelean Meda Lavinia Negrutiu Marinela Miclau Cristian Casut Cosmin Sinescu Anastasia Alexandratou Athanasios Katsavrias Alexandra Denisa Stoian Mihai Rominu |
| author_sort | Caius Stoian |
| collection | DOAJ |
| description | The aim of this work is to assess the crystalline structure modification of an SLM Co-Cr-W dental alloy, veneered with two different ceramics, by means of X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy, coupled with energy-dispersive spectroscopy (SEM-EDS). Ten identical plates were fabricated using SLM and were subsequently subjected to ceramic veneering. Following the repeated firing of the ceramic layers, carried out at temperatures exceeding 900 °C, new crystalline phases and variations in the crystallite sizes in the SLM Co-Cr-W dental alloy used for the substructure were detected via XRD. The two veneering ceramics showed significant differences in their behavior, beginning with the first firing, accompanied by structural changes. AFM micrographs and histograms of the surface heights over the whole scanned area of the samples showed that the surface of the Co-Cr-W dental alloy is strongly affected by the repeated firings necessitated by the ceramic firing process, a finding in accordance with the XRD results. The SEM investigation revealed that the different firing parameters had an impact on the alloy, the ceramic microstructure, and the surface quality. The differences in the chemical composition of the ceramics, highlighted by EDS, are reflected in their behavior. The crystalline alloy structure is influenced by the repeated firings of the ceramic layers. |
| first_indexed | 2024-03-11T01:20:31Z |
| format | Article |
| id | doaj.art-4a6ec01f5438440eb477d682b1210755 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T01:20:31Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-4a6ec01f5438440eb477d682b12107552023-11-18T18:07:30ZengMDPI AGApplied Sciences2076-34172023-07-011314805210.3390/app13148052Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot StudyCaius Stoian0Lavinia Cosmina Ardelean1Meda Lavinia Negrutiu2Marinela Miclau3Cristian Casut4Cosmin Sinescu5Anastasia Alexandratou6Athanasios Katsavrias7Alexandra Denisa Stoian8Mihai Rominu9Department of Prostheses Technology and Dental Materials, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Sq., 300041 Timisoara, RomaniaDepartment of Technology of Materials and Devices in Dental Medicine, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Sq., 300041 Timisoara, RomaniaDepartment of Prostheses Technology and Dental Materials, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Sq., 300041 Timisoara, RomaniaCondensed Matter Physics Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, 144 Dr. A. Paunescu-Podeanu Str., 300569 Timisoara, RomaniaCondensed Matter Physics Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, 144 Dr. A. Paunescu-Podeanu Str., 300569 Timisoara, RomaniaDepartment of Prostheses Technology and Dental Materials, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Sq., 300041 Timisoara, RomaniaRNANO Lab—Research Unit of Advanced, Composite, Nano Materials & Nanotechnology, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechneiou Str., Zografou, 15773 Athens, GreeceRNANO Lab—Research Unit of Advanced, Composite, Nano Materials & Nanotechnology, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechneiou Str., Zografou, 15773 Athens, GreeceDepartment of Technology of Materials and Devices in Dental Medicine, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Sq., 300041 Timisoara, RomaniaDepartment of Prostheses Technology and Dental Materials, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Sq., 300041 Timisoara, RomaniaThe aim of this work is to assess the crystalline structure modification of an SLM Co-Cr-W dental alloy, veneered with two different ceramics, by means of X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy, coupled with energy-dispersive spectroscopy (SEM-EDS). Ten identical plates were fabricated using SLM and were subsequently subjected to ceramic veneering. Following the repeated firing of the ceramic layers, carried out at temperatures exceeding 900 °C, new crystalline phases and variations in the crystallite sizes in the SLM Co-Cr-W dental alloy used for the substructure were detected via XRD. The two veneering ceramics showed significant differences in their behavior, beginning with the first firing, accompanied by structural changes. AFM micrographs and histograms of the surface heights over the whole scanned area of the samples showed that the surface of the Co-Cr-W dental alloy is strongly affected by the repeated firings necessitated by the ceramic firing process, a finding in accordance with the XRD results. The SEM investigation revealed that the different firing parameters had an impact on the alloy, the ceramic microstructure, and the surface quality. The differences in the chemical composition of the ceramics, highlighted by EDS, are reflected in their behavior. The crystalline alloy structure is influenced by the repeated firings of the ceramic layers.https://www.mdpi.com/2076-3417/13/14/8052Co-Cr-W dental alloy3D printingselective laser meltingceramic veneeringcrystalline structureX-ray diffractometry |
| spellingShingle | Caius Stoian Lavinia Cosmina Ardelean Meda Lavinia Negrutiu Marinela Miclau Cristian Casut Cosmin Sinescu Anastasia Alexandratou Athanasios Katsavrias Alexandra Denisa Stoian Mihai Rominu Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study Applied Sciences Co-Cr-W dental alloy 3D printing selective laser melting ceramic veneering crystalline structure X-ray diffractometry |
| title | Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study |
| title_full | Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study |
| title_fullStr | Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study |
| title_full_unstemmed | Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study |
| title_short | Crystalline Structure Assessment of Ceramic Veneered Co-Cr-W Dental Alloy Substructures Obtained by Selective Laser Melting—A Pilot Study |
| title_sort | crystalline structure assessment of ceramic veneered co cr w dental alloy substructures obtained by selective laser melting a pilot study |
| topic | Co-Cr-W dental alloy 3D printing selective laser melting ceramic veneering crystalline structure X-ray diffractometry |
| url | https://www.mdpi.com/2076-3417/13/14/8052 |
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